Automatic stop for phonographs.



A C. HENDRICKS.

AUTOMATIC STOP FOR PHONOGRAPHS.

APPLICATION FILED FEB. 2|.191s.

1,277,583, Patentease t. 3,1918.

2 SHEETS-SHEET 1.

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AUTOMATIC STOP FOR PHONOGRAPHS.

APPLICATION FILED FEB. 2|, 1918.

l ,Q7'?,583., Patented Sept 3, 1918.

2 SHEETSSHEET 2.

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ADAM o. iinivrnrcrks, or MARTINSBURG, wns'r vrneime.

AUTOMATIC STOP FOR PHONOGRAPHS.

Application filed February21, 1918.

To all whom it may concern:

Be it known that I, ADAM C. HENDRICKS, a citizen of the United States, and a resident of. Martinsburg, in the county of Berkeley and State of West Virginia, have made certain new and useful Improvements in Automatic Stops for Phonographs, of which the following is a specification.

My present invention relates generally to automatic stops for phonographs and more particularly to certain improvements in connection with the apparatus for this purpose described and claimed in my Patent No. 1,256,319, dated Feb. 12, 1918, the object of my improvements being the provision of means by which to simplify the construction as outlined in my application just above referred to, and enable me to obtain substantially similar results with considerably less trouble and materially reduced eX pense.

In the accompanying drawing illustrating my present improvements:

Figure 1 is a plan view of a portion of a phonograph in connection with which my improvements'are utilized.

Fig. 2 is a rear elevation of the dial.

Fig. 3 is a front elevation thereof.

Figs. 4: and 5 are vertical sections through the dial taken respectively on line 4-4 and 5-5 of Fig. 3.

Fig. 6 is a bottom plan view of the guide bracket removed.

Fig. 7 is a vertical section through the tone arm with the guide bracket attached substantially on line 7-7 of Fig. 1.

Fig. 8 is a detailed perspective view of the spring adjuster removed, and,

Fig. 9 is a detailed perspective View of a slightly modified form of brake arm.

Referring now to these figures, and particularly to Fig. 1, wherein I have shown a portion of a phonograph generally indicated at 10, the tone arm being seen at 11 and the turn table at 12, which latter receives the record disks of which one is indicated at 13, and is provided, as usual, with a depending flange around its edge, the inner surface of which is engaged by a lever or other brake pad 14: at the free end of the brake arm 15, when the latter is released and freed for movement under tension of its spring 16 to active position.

For this purpose my present improve ments propose that the actuating spring 16, be in the form of. a coil spring having hooks Specification of Letters Patent.

Patented Sept. 3, 1918.

Serial No. 218,490.

at its opposite ends, one of which is engaged through an eye 17 intermediate the ends of the arm 15, and the opposite hook of which is engaged by the terminal hook 18 of an adjustable anchor piece 19 normally anchored to the upper surface of the phonograph at the rear of the turn table and at one side of the base of the tone arm 11, by means of a screw and clip 20 as seen in Fig. 1.

In accordance with my present improvements, furthermore, the spring 16 not only acts to move the released brake arm 15 into active engagement with the turn table, but it also serves to tension for the dial 21 and its controlling arm 22, the latter having an angular terminal pin 22 normally in movable engagement with the curved guide piece 23. This guide piece is in the present instance pro vided with an angular portion 24 securely fastened as seen particularly in Figs. 6 and 7, to the offset extension 25 of a concaved' bracket 26, the latter having apertures 27 by means of which it may be secured to the under portion of the tone arm 11 adjacent its inner end or base and to conform to the contour of which tone arm, the bracket 26 is fitted. I am thus enabled to provide for the effective support of the guide piece, and at the same time avoid the complications incident to its support upon the base of the tone arm as in my application above referred to.

By referring to Fig. 1, it will be noted that one end 28 of the guide piece 23 is bent rearwardly upon the upper surface of the offset portion 25 of the bracket 26, and against this portion normally rests an offset end 29 of a lever pivotally mounted upon a depending stud 30 and held in position by a spring 31 mounted on the stud and having one end engaging a lug 32 of the lever as seen particularly in Fig. 6. The offsetportion 29 of this lever normally forms a part of the guide surface along which the pin 22' moves, the latter being held to follow the guide surface until it passes beyond the end of the offset piece 29, at which time shifts rearwardly against the bent arm 28 so that upon outward movement of the tone arm 11 one more at the start of a new piece, the pin 22 passes along the surface of the bent end 28 and presses the part 29 out wardly against the tension of its spring 31,

provide the desired spring surface of the guide piece 23.

The dial plate 21, its pivoted adjusting arm 33 together with the spring controlled latching means 3 1 on the latter engageable with the notched edge 35 of the dial plate,

and the eccentric adjusting connections 36 between the said adjusting arm and the controlling arm 22 are all formed as in my application first above referred to and the dial plate with its movable parts are similarly secured in the present instance to an upright post 37 having bearings at its upper and lower ends in connection with the upper and lower ends of the stationary bracket 38. In the present construction, however, the post 37 is without springs as the spring 16, as before stated, provides the necessary spring action for the movement of the dial plate with its supporting post, as well as the brake arm 15. The post 37 is, however, provided with a reduced lower portion 39 at which point the brake arm is attached.

Where this brake arm is in the form of a metal piece, as in Figs. 1 to 4:, inclusive, it is provided with a tubular end 40 disposed on the portion 39 of the post 37 and secured by a set screw 41, and where it is in wire form, as indicated at 15 in the modified construction of Fig. 9, the wire of which it is constructed is bent intermediate its ends to form a coil 42, providing resiliency, and an end loop 43 by means of which it is adjustably secured to a bearing block l i, the latter being adapted for disposal upon the portion 39 of the post 37 to which it may be secured by a set screw 45.

It is thus obvious that while my present improvements operate in substantially the same manner as the apparatus described and claimed in my application first above referred I am enabled to effect a considerable economy and it is further obvious that in simplifying the construction, I have added to its strength as well as to its effectiveness in use.

1. The combination with a disk phonograph having a turn table and a movable tone arm, of a guide member carried by the tone arm, a bar normally held against the guide member and adapted to clear the latter during the movement of the tone arm, a swinging member to which the said bar is connected having a support including an upright post, a brake arm fixed to the post and movable to engage the turn table, and a spring for shifting the brake arm into and out of position, said spring normally maintaining the said bar against the guide member.

2. The combination with a disk phonograph having a turn table and a movable tone arm, of a guide member carried by the tone arm, a bar normally held against the guide member and adapted to clear the latter during the movement of the tone arm, a swinging member to which the said bar is connected having a support including an upright post, a brake arm fixed to the post and movable to engage the turn table, a spring connected at one end to the phonograph and at its opposite end to the said brake arm to move the latter into and out of position and normally maintaining the said bar in contact with the guide member.

3. The combination with a disk phonograph having a turntable and a movable tone arm, of a guide member carried by the tone arm, a bar normally held against the guide member and adapted to clear the latter during the movement of the tone arm, a swinging member to which the said bar is connected having a support including an up right post, a brake arm fixed to the post and movable to engage the turn table, a spring connected at one end to the brake arm, and an adjustable spring anchoring member adj ustably connected to a' portion of the phonograph and engaging the opposite end of the spring.

4. The combination with a diskphono graph having a turn table and a movable tone arm, of a spring actuated brake arm movable into engagement with the turn -table, a controlling bar having connection with the said brake arm, and controlling guide means carried by the tone arm including a guide member against which the said bar is normally held, a bracket secured to the tone arm and having a portion upon which the said guide member is secured, and a pivoted spring controlled lever also mounted on the bracket over a portion of which the said bar is also movable, said lever having its said portion normally positioned adjacent one end of the guide member to form a continuation thereof.

5. The combination with a disk phonograph having a turn table and a movable tone arm, of a guide member carriedby the tone arm, a spring pressed bar normally held against the guide member and adapted to clear the latter during the movement of the tone arm, a brake arm having connection with the said bar and normally held in inactive position, while the bar is in engagement with the guide member, said guide member including a rigid guide piece provided with a guide surface and having one end bent at an angle to its said guide surface, and a pivoted spring controlled lever having a portion normally engaged with the said guide piece adjacent its bent end to form a continuation of the guide surface, substantially as described.

ADAM o. HENDRICKS,

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. c. 

